[VinceGledhill]

Thanks for that Guys.

Andy. I've removed the stroke, as recommended, and I've now changed the Head file and the port sizes as per your recommendations.

I've also added the cam that you have recommended.

However my figures are much different to yours. Please could you take a look at the enclosed file. I've got it making 594Hp but this is at 7500 revs. Red line screamer city.

Could you let me know what I have done wrong.

Regards
Vince Gledhill
Limey, Leeds UK